| /* |
| * Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
| * for details. All rights reserved. Use of this source code is governed by a |
| * BSD-style license that can be found in the LICENSE file. |
| */ |
| /** |
| * @assertion A type T is more specific than a type S, written T << S, if one |
| * of the following conditions is met: |
| * • T is S. |
| * • T is ⊥ |
| * • S is dynamic. |
| * • S is a direct supertype of T. |
| * • T is a type parameter and S is the upper bound of T. |
| * • T is a type parameter and S is Object. |
| * • T is of the form I<T1, ..., Tn > and S is of the form I <S1, ..., Sn> |
| * and Ti << Si 1 <= i <= n. |
| * • T and S are both function types, and T << S under the rules of section |
| * (Types/Function Types). |
| * • T is a function type and S is Function. |
| * • T << U and U << S. |
| * << is a partial order on types. T is a subtype of S, written T <: S, iff |
| * [⊥/Dynamic]T << S. |
| * . . . |
| * An interface type T may be assigned to a type S, written T <=> S, if either |
| * T <: S or S <: T. |
| * @description Checks that GenericType1<T> is a subtype of GenericType2<S> |
| * where T and S are complex generics. Checks mutual assignability as well. |
| * @issue 27556 |
| * @static-clean |
| * @author iefremov |
| * @reviewer rodionov |
| */ |
| import "../../../Utils/expect.dart"; |
| |
| class I<A, B, C> {} |
| class J<A, B, C> extends I<A, B, C> {} |
| class K extends J {} |
| class C extends K {} |
| |
| typedef J f(I<K, List<Map<int, double>>, int> i, [List<Map> j]); |
| typedef K f_1(I<J, List<Map<int, num>>, num> i, [List<Map> j]); |
| typedef C f_2(I<J, List<Map<int, num>>, num> i, [List<Map> j]); |
| |
| I<f, num, List<Map<num, Map>>> f1() {} |
| |
| main() { |
| Expect.isTrue(new I<f_1, int, List<Map<int, Map<int, int>>>>() is I<f, num, List<Map<num, Map>>>); |
| Expect.isTrue(new I<f_2, int, List<Map<int, Map<int, int>>>>() is I<f, num, List<Map<num, Map>>>); // fails |
| Expect.isTrue(new J<f_1, int, List<Map<int, Map<int, int>>>>() is I<f, num, List<Map<num, Map>>>); |
| Expect.isTrue(new J<f_2, int, List<Map<int, Map<int, int>>>>() is I<f, num, List<Map<num, Map>>>); // fails |
| Expect.isTrue(new K() is I<f, num, List<Map<num, Map>>>); |
| Expect.isTrue(new C() is I<f, num, List<Map<num, Map>>>); |
| |
| I<f_1, int, List<Map<int, Map<int, int>>>> v1 = f1(); |
| I<f, num, List<Map<num, Map>>> v1_ = new I<f_1, int, List<Map<int, Map<int, int>>>>(); |
| |
| I<f_2, int, List<Map<int, Map<int, int>>>> v2 = f1(); |
| I<f, num, List<Map<num, Map>>> v2_ = new I<f_2, int, List<Map<int, Map<int, int>>>>(); |
| |
| J<f_1, int, List<Map<int, Map<int, int>>>> v3 = f1(); |
| I<f, num, List<Map<num, Map>>> v3_ = new J<f_1, int, List<Map<int, Map<int, int>>>>(); |
| |
| J<f_2, int, List<Map<int, Map<int, int>>>> v4 = f1(); |
| I<f, num, List<Map<num, Map>>> v4_ = new J<f_2, int, List<Map<int, Map<int, int>>>>(); |
| } |